CA2062661A1 - Light-wave distance measuring apparatus for vehicle - Google Patents

Light-wave distance measuring apparatus for vehicle

Info

Publication number
CA2062661A1
CA2062661A1 CA2062661A CA2062661A CA2062661A1 CA 2062661 A1 CA2062661 A1 CA 2062661A1 CA 2062661 A CA2062661 A CA 2062661A CA 2062661 A CA2062661 A CA 2062661A CA 2062661 A1 CA2062661 A1 CA 2062661A1
Authority
CA
Canada
Prior art keywords
light
distance measuring
wave distance
measuring apparatus
light intensity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2062661A
Other languages
French (fr)
Other versions
CA2062661C (en
Inventor
Yukio Ohmamyuda
Shigeru Kimura
Toru Tanabe
Kazuhisa Iwasaki
Takao Seto
Hideki Kitamura
Kazuhiko Sugimura
Yasushi Senoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stanley Electric Co Ltd
Original Assignee
Yukio Ohmamyuda
Shigeru Kimura
Toru Tanabe
Kazuhisa Iwasaki
Takao Seto
Hideki Kitamura
Kazuhiko Sugimura
Yasushi Senoo
Stanley Electric Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3072602A external-priority patent/JPH04283684A/en
Priority claimed from JP3072601A external-priority patent/JPH04283682A/en
Priority claimed from JP3072600A external-priority patent/JPH04283681A/en
Application filed by Yukio Ohmamyuda, Shigeru Kimura, Toru Tanabe, Kazuhisa Iwasaki, Takao Seto, Hideki Kitamura, Kazuhiko Sugimura, Yasushi Senoo, Stanley Electric Co., Ltd. filed Critical Yukio Ohmamyuda
Publication of CA2062661A1 publication Critical patent/CA2062661A1/en
Application granted granted Critical
Publication of CA2062661C publication Critical patent/CA2062661C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
    • G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

A light-wave distance measuring apparatus has an intermittent control continuously changing periods of time during which a light intensity modulator 1 transmits and interrupts transmitting a light intensity modulated signal so as to avoid a synchronization of the light intensity modulated signal of the present apparatus and a light intensity modulated signal from a second light-wave distance measuring apparatus. The operation of the intermittent control prevents a misfunction of the apparatus. Provisions of a self-speed detector, a time marker and a light transmission interval measurer enable the apparatus to detect the speed of a target object. Thus, the apparatus is suitable as a vehicle mount type. The apparatus accurately operates even when both the apparatus and the target object are moving. The apparatus also accurately operates without an interference even when corresponding light-wave distance measuring apparatus for vehicle are used in a small area.
CA002062661A 1991-03-12 1992-03-11 Light-wave distance measuring apparatus for vehicle Expired - Fee Related CA2062661C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP3-72600 1991-03-12
JP3072602A JPH04283684A (en) 1991-03-12 1991-03-12 Optoelectronic distance meter
JP3072601A JPH04283682A (en) 1991-03-12 1991-03-12 Optoelectronic distance meter for vehicle
JP3-72602 1991-03-12
JP3072600A JPH04283681A (en) 1991-03-12 1991-03-12 Optoelectronic distance meter for vehicle
JP3-72601 1991-03-12

Publications (2)

Publication Number Publication Date
CA2062661A1 true CA2062661A1 (en) 1992-09-13
CA2062661C CA2062661C (en) 1997-09-23

Family

ID=27300991

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002062661A Expired - Fee Related CA2062661C (en) 1991-03-12 1992-03-11 Light-wave distance measuring apparatus for vehicle

Country Status (4)

Country Link
US (1) US5260682A (en)
EP (1) EP0503599B1 (en)
CA (1) CA2062661C (en)
DE (1) DE69211187T2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008241695A (en) * 2007-02-27 2008-10-09 Fujifilm Corp Range finder and range finding method
JP2008209298A (en) * 2007-02-27 2008-09-11 Fujifilm Corp Ranging device and ranging method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1585053A (en) * 1975-02-14 1981-02-25 Secr Defence Laser rangefinder
AU6455880A (en) * 1979-12-07 1981-06-11 Hewlett-Packard Company Velocity corrected range system
US4453825A (en) * 1979-12-07 1984-06-12 Hewlett-Packard Company Distance transducer
US4766421A (en) * 1986-02-19 1988-08-23 Auto-Sense, Ltd. Object detection apparatus employing electro-optics
JP2659225B2 (en) * 1988-08-26 1997-09-30 富士通テン株式会社 Inter-vehicle distance control device

Also Published As

Publication number Publication date
EP0503599A2 (en) 1992-09-16
US5260682A (en) 1993-11-09
EP0503599A3 (en) 1992-12-09
EP0503599B1 (en) 1996-06-05
DE69211187D1 (en) 1996-07-11
CA2062661C (en) 1997-09-23
DE69211187T2 (en) 1996-12-19

Similar Documents

Publication Publication Date Title
AU628066B2 (en) Distance measuring method and apparatus therefor
FR2402975B1 (en) SYSTEM FOR TRANSMITTING DATA SIGNALS USING AN ANGULAR MODULATING CARRIER AND CONSTANT AMPLITUDE
EP0191589A3 (en) Coherent distributed sensor and method using short coherence length sources
CA2100063A1 (en) Apparatus and method for measuring a blood parameter
WO1997001113B1 (en) Camera and method of rangefinding
GB2265514B (en) A receiver-transmitter for a target identification system
CA2245665A1 (en) Optical measurement system
FR2675907B1 (en) ECHO DISTANCE MEASUREMENT SYSTEM WITH CALIBRATION DEVICE.
SE8902157L (en) PROCEDURE AND DEVICE FOR DETERMINING POSITIONS OF MOVEMENT ROADS
JPS5542185A (en) Detecting device for arc welding or the like
CA2210703A1 (en) Optical measurement instrument for living body
EP0930485A3 (en) Device to detect or to create optical signals
CA2062661A1 (en) Light-wave distance measuring apparatus for vehicle
FR2629224B1 (en) APPARATUS FOR TRANSMITTING A CONSISTENT OPTICAL SIGNAL, FREQUENCY MODULE
DE69433483D1 (en) High sensitivity optical receiver for receiving a single high frequency modulated optical signal
GB1380537A (en) Method of and apparatus for optical determination of spot positions
GB1274241A (en) Apparatus for measuring the refraction index of a medium along a light path
JPS56142411A (en) Device for detecting rotation angle
DE3474346D1 (en) Distance sensor for measuring the distance to a closely situated object
JPS5750015A (en) Optical automatic steering method of carrier vehicle
JPS5393554A (en) Apparatus for positioning stacker crane siung modulated light
JPS5443780A (en) Photometric apparatus using optical fiber
JPS5398721A (en) Facisimile transmitter
GB1475232A (en) Method of measuring the relative spacing of an object from an optical image correlator
JPS55147376A (en) Road surface monitoring device

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed